While attempting to open some Excel files on your computer, you must have seen the Compatibility Mode message being displayed in the title bar of the file. It’s often mistaken as a warning ...

While the Compatibility Checker window is open, click the "Find" link ... After you save a workbook in an older format, Excel runs in Compatibility Mode. In this mode, you can't use any newer ...

By default, Excel 2007 allows you to opens workbooks created in Excel 2003 in compatibility mode to preserve the integrity of older file versions. You can edit and save Excel 2003 files in Excel 2007.

Excel allows you to lock specific areas of a sheet with a password or protect the entire workbook. You can also set an Excel ...